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Implement Application DoEvents in WPF

<Window x:Class="WpfApplication1.Window1"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="WPF" Height="200" Width="300">     <StackPanel>         <Button x:Name="btnWithout" Click="btnWithout_Click">Without DoEvents</Button>         <Button x:Name="btnWith" Click="btnWith_Click">With DoEvents</Button>         <ListBox x:Name="listBox"/>     </StackPanel> </Window> //File:Window.xaml.cs using System.Windows; using System.Windows.Threading; namespace WpfApplication1 {     public partial class Window1 : Window     {         private delegate void EmptyDelegate();         public Window1()         {             InitializeComponent();         }         private void btnWithout_Click(object sender, RoutedEventArgs e)         {             LoadNumbers(false);         }         private void btnWith_Click(object sender, RoutedEventArgs e)         {             LoadNumbers(true);         }         private void LoadNumbers(bool callDoEvents)         {             listBox.Items.Clear();             btnWithout.IsEnabled = false;             btnWith.IsEnabled = false;             for(int i = 1; i <= 10000; i++)             {                 listBox.Items.Add("Number " + i.ToString());                 if(callDoEvents){                     DoEvents();                 }                              }             btnWithout.IsEnabled = true;             btnWith.IsEnabled = true;         }         public static void DoEvents()         {             Dispatcher.CurrentDispatcher.Invoke(DispatcherPriority.Background,new EmptyDelegate(delegate{}));         }     } }